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Answer number 2, contradiction
Then 16plus16 then 34plus34 the rule is add the answer by the answer
4 hours. As 230 kilometers is 230000meters and 920000 meters divided by 230000 meters is 4 which is 4 hours
Answer:
x1=(7-√65)/2
x2=(7+√65)/2
Step-by-step explanation:
x^2=7x+4
x^2-7x-4=0
D=(-7)^2-4*1*(-4)=49+16=65
x1=(-(-7)-√D)/(2*1)=(7-√65)/2
x2=(-(-7)+√D)/(2*1)=(7+√65)/2